Mud Flaps & Wheel-Well Liners for BYD SEAL U / SEALION 6 – 4, 2 or 6 Piece Sets

Every wet road coats your SEAL U's sills, rear doors and rear bumper in grit — and the factory setup leaves the rear wheel arches half exposed. This is the complete fix in one listing: contoured mud flaps for all four wheels, plus the rear wheel-well liners BYD left out, in three package options.

Choose the 4-piece mud flap set, the 2-piece wheel-well liner set, or the full 6-piece package that combines both. Every piece is molded for the BYD SEAL U / SEALION 6 wheel arches, follows the arch and sill lines edge to edge, and fixes with screws into the arch — no universal flat sheet, no trimming, no guesswork.

• Stops the spray at the source — the front flaps kill the rooster-tail that sandblasts the front doors and sills; the rear flaps keep the rear bumper, tailgate lower edge and anyone behind you out of the spray line. The before-and-after photo shows exactly the panel this protects.
• Closes the rear arch gap — the SEAL U's rear wheel wells have a large exposed inner area that collects mud, stones and road salt against the body. The 2-piece liner set covers the full arch sweep (shown by the coverage diagram), so debris hits replaceable PP instead of your bodywork and factory felt liner.
• Stone-chip and rust defense — chips on sills and rear quarters start as exactly the kind of gravel strike these pieces intercept. Intact paint is what keeps corrosion out and resale value in.
• Molded for this car, front and rear — each flap is a different shape because each arch is different. The flaps are handed and position-specific, with pre-formed mounting holes that line up with the arch fixing points.
• Built to flex, not shatter — molded PP shrugs off speed bumps, kerb brushes and frozen slush. It bends on impact and springs back, where brittle guards crack.

• Mud Flaps · 4 Pieces ($39.99) — front left, front right, rear left and rear right contoured flaps, with fitting screws and the L-shaped wrench shown in the photos. This is the classic four-corner protection set.
• Wheel-Well Liners · 2 Pieces ($54.99) — the left and right rear wheel-arch liners. Long, rigid molded panels with a textured anti-stone-chip face and pre-formed screw bosses; each is marked for its side (an “R” marking is visible in the fitting photo). Choose this if your flaps are sorted but your rear arches are exposed.
• Mud Flaps + Liners · 6 Pieces ($68.99) — everything above in one box: 4 flaps + 2 liners. The complete arch protection package, and the best value of the three.

• Material: molded PP (polypropylene), matte black — the same class of flexible, UV-stable plastic used for factory arch trim, so it matches the SEAL U's existing black arch and sill cladding.
• Flap shape: a wraparound top section that hugs the arch lip flows into a straight drop blade that hangs in the tire's spray path, with a reinforced rim and pre-formed holes on the mounting flange.
• Liner shape: full-sweep arch coverage with molded ribs and a grained texture on the impact face, plus raised screw bosses that seat the panel firmly against the arch.
• Finish: uniform matte black, top to bottom — no logos, no graphics, nothing to clash with the car.

• Vehicle: BYD SEAL U (EV and DM-i) — the same SUV sold as BYD SEALION 6 in Australia, New Zealand and other export markets, and as Song Plus in China
• Model years: 2023, 2024, 2025 and 2026
• Positions: flaps — behind all four wheels; liners — inside the two rear wheel arches
• Drive layouts: FWD and AWD versions share the same wheel arches; LHD and RHD cars use the same set

1. Clean the arch lips and sill ends so the moldings seat against a true surface. Match each piece to its corner — the shapes only sit flush in the right position.
2. Offer the flap up to the arch and line up the pre-formed holes with the arch fixing points.
3. Run the supplied screws in with the included wrench and snug them down evenly. The fitting photos show the whole job done at the kerb, wheels on.
4. For the liners, slide the panel into the rear arch, seat it along the arch sweep, and fix it through the molded screw bosses, working from one end to the other.
5. Work around all four corners (and both rear arches on the 6-piece package), then check every piece is tight and clear of the tire at full steering lock.

• Material: molded PP, matte black
• Attachment: screws into the wheel-arch fixing points; screws and L-wrench included with the mud flap sets
• In the box (4-piece): 4 × mud flaps (front pair + rear pair) + fitting screws + wrench
• In the box (2-piece): 2 × rear wheel-well liners (left + right)
• In the box (6-piece): 4 × mud flaps + 2 × rear wheel-well liners + fitting screws + wrench
• Care: rinse mud off with a hose or pressure washer at normal distance; the matte PP face does not hold wax or dressing, and road salt washes straight off

Which package do I actually need?
If your sills and rear bumper get filthy and peppered, start with the 4-piece flap set — that is where the visible damage happens. If you have looked inside your rear arches and seen bare body and felt exposed to everything the tire throws up, add the liners. The 6-piece package does the complete job in one order and costs less than buying the two sets separately.

Are SEAL U and SEALION 6 really the same fitment?
Yes. SEALION 6 is the export-market name for the SEAL U; the body shell and wheel arches are the same, in both the EV and the DM-i plug-in hybrid. One molding set serves both nameplates.

Do I need to drill new holes?
The flaps are shaped around the arch fixing points and screw on with the supplied hardware — the fitting is a screwdriver-and-wrench job at each corner, with no cutting or reshaping of the car. The liners fix through their molded bosses in the arch in the same way.

Do the wheels have to come off?
No. Every photo of this set being fitted was taken with the car on the ground and the wheels on. Turning the front wheels to full lock gives you all the room you need at the front; the rears are reached from behind the arch.

Will the flaps scrape on speed bumps?
They are contoured flaps, not long rally blades: the drop section is sized for this car's ride height and arch position, and the flexible PP gives rather than cracking if it ever kisses a bump. Normal speed-bump and driveway use is exactly what they are shaped for.

Are the liners just for looks?
No — they are the hardest-working pieces in this listing. The rear arch is where stones, water and winter salt get thrown against the body at speed. A rigid liner takes those hits, keeps packed mud off the metal and felt behind it, and hoses clean in seconds.

Every package option on this listing is over $29.90 USD, so standard worldwide shipping is free. (For smaller orders, standard shipping is $9.90 USD below the $29.90 USD threshold.) Return requests can be submitted within 30 days after delivery — see our Returns & Refunds policy for the full terms.

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